RE: changing transmitter frequencies
chris6414,
The crystal caps on both of my Futaba transmitters, and my one Hitec transmitter, were glued to the transmitter case.
The glue dot is very tiny and was easy to break, but, I assume the Futaba and Hitec legal teams decided they can defend themselves in court by saying they try to keep people from doing the wrong thing.
To remove the crystals I had to "break" the radio.